查询词典 root tip

Just like that there are an irrational root and a rational root for the existence of quadric equa-tions with one unknown, there is objectively a "triple root" solution for sports will: these three roots are unified root, rational root and irrational root.

正像数学一元二次方程存在无理根和有理根那样，体育意志也客观地存在着"三重根"：它们是统一根、有理根和无理根。

Analyzed the effect factors of Abies fabric root system strength,of which the root diameter and root length are the important effect factors, the interaction of root diameter and root length bring on the strength of Abies fabric root system.

分析了影响冷杉根系侧强曲线的因素，其中冷杉根系的根径和根长为影响其侧强曲线的主要因素，根系的抗拉强度的大小是根径与根长共同作用的结果。

The secondary root number per plant of Yumai No 49,a mi d-s trength quality wheat,is the smallest among the three varieties except the winte r stage but its root system quality is the best;the intensity of reducing TTC an d the activity of SOD of fresh wheat root are the highest during the period fro m winter stage to flag leaf stage.Since flag leaf stage,its physiological charac ters are weaker and have bigger variation during whole stage.The secondary root number per plant of Yumai No 50,a soft quality wheat,is the biggest except duri ng winter stage,and its dry weight of root of single plant is the heaviest in ev ery stage.Before 19th,March,its intensity of reducing TTC is the weakest and dec reases abruptly after flag leaf stage,but its activity of SOD decreases slowly.R oot dry weight per plant of Yumai No 34,a high quality wheat,is the smallest amo ng the three varieties and its root system quality is the weakest.Before jointin g stage,the intensity of reducing TTC is stronger,but after that,it decreases sl owly though it is smaller,and the activity of SOD decreases slowly in every stag e.

中筋小麦豫麦49号除越冬初期外，其它各时期单株次生根条数均为最少，单株根干重介于豫麦34号及豫麦50号之间，单根质量高；越冬初期至挑旗期，根系活力、根中SOD活性均强于其它两个品种，挑旗后，根系生理活性较小，整个生育期根系生理活性变化幅度大；弱筋小麦豫麦50号除越冬初期外，其它各时期单株次生根条数均最多，单株根干重各时期均为最大；拔节前根系活力最弱，挑旗后根系活力下降幅度较大，根中SOD活性较强且各时期变化幅度不大；强筋小麦豫麦34号，单株根干重最小，根系质量最差；拔节前根系活力较强，拔节后根系活动较弱，下降速度缓慢，根中SOD活性各时期变化幅度较小。

When earlier place upside still does not have apparent symptom, root ministry grows to already was affected, radicle root needle grows stop, and cerebral cortex continues to add thick, in close root needle section chief gives very much new root, serious Shi Yougen dies, typical symptom is long around dead root piece short thick and much more ramose root group.

初期当地上部还无明显症状时，根部生长已受到影响，幼根根尖生长停止，而皮层继续加厚，在近根尖处长出很多新根，严重时幼根死亡，典型症状是在死根四周长出短粗且多分枝的根群。

The results showed that soil type had significant effects on the root morphology and nodule traits of test varieties. In alfisol, the root dry mass, root length, and root surface area of test varieties were greater at the fifth trifoliolate stage and bloom-beginning stages while smaller after seed-beginning stage, compared with those in mollisol, and the average root diameter after seed-beginning stage was higher in alfisol than that in mollisol. Soil type did not affect root-shoot ratio. The nodule number after seed-beginning stage was much smaller in alfisol than in mollisol, while the nodule fresh mass and the mass per nodule were in adverse.

结果表明：土壤类型对大豆根系形态及结瘤性状均有显著影响，在第5片复叶展开期和初花期，暗棕壤的根系干质量、根长和根表面积低于黑土，而在鼓粒初期后高于黑土，暗棕壤的平均根直径在鼓粒初期后也高于黑土，但土壤类型对根冠比的影响不大；暗棕壤的根瘤数在初花期后明显低于黑土，但根瘤鲜质量和单个根瘤质量高于黑土。

A pot experiment was conducted with two soybean varieties (Di2003-1 and Hefeng25) and two main soil types in Heilongjiang Province to study the interactive effects of variety and soil type on the root morphology and nodule traits of soybean plants. Root samples were collected at the fifth trifoliolate stage, bloom-beginning stage, pod-beginning stage, full pod stage, seed-beginning stage, full seed stage, and full maturity stage for the analysis of root dry mass, root length, root surface area, average root diameter, nodule number, nodule fresh mass, and mass per nodule.

选取黑龙江省2种主要农田土壤类型和2个大豆品种（滴2003-1和合丰25），采用盆栽试验，分别于大豆第5片复叶展开期、初花期、结荚初期、结荚盛期、鼓粒初期、鼓粒期和完熟期取样，进行根系形态（根干质量、根长、根表面积和平均根直径等）和根瘤性状（根瘤数、根瘤鲜质量和单个根瘤质量）的动态分析，以研究品种和土壤类型对大豆根系形态特征的影响。

By way of analysing the structural characteristics of root tip, this paper clarifies that the root hair zone is the main position in absor bing mineral nutritions, and the absorption way is divided into apoplast and symplast channel because of the existence of the casparian strip in the root tip.

本文通过分析根尖的结构特点，阐明了根毛区是矿质养分吸收的主要部位，其吸收途径因根尖凯氏带的存在而分为质外体途径和共贡体途径。

Root,immunoassay of ELISA(enzyme linked immunosorbent assay) was employed to determine IAA concentration in root tip, unilateral application of agar block containing IAA on root tip was carried out to investigate the effect of exogenous IAA on phototropic response.

为了研究生长素在水稻根负向光性反应中的作用，用含有IAA的琼脂块贴附在种子根的根尖表面观测IAA对根的生长效应，用ELISA法测定根尖的IAA含量，并对种子根弯曲部分进行半薄切片，结果表明：(1)种子根的生长方向既受光的调控也受外施的IAA的调控，根尖向贴有含IAA琼脂块的一侧弯曲生长；(2 )不定根在光照 1.5h后，背光侧的IAA含量明显大于向光侧；(3)种子根尖发生弯曲生长是伸长区的细胞不均等生长所致。

Segments produced clusters of somatic embryos from embryogenic calli or directly from root apical meristems , and that also can convert into bud directly in the different tissue culture conditions. Modified media B5 with 1.0 mg.L-1 2,4 - D and 3.0mg.L~1 6-BA is suit to induce calli, and 0.5 mg.L-1 NAA is fit for somatic embryos inducement from calli. 6-BA encreased direct somatic embryogenesis on root tip distinctly,but NAA is retard it. NAA also prolong the time of root-tip convert into bud directly.

在改良B_5(微量元素为原来的1／3)中加入1.0mg.L~(-1)2，4—D和3.0mg.L~(-1)6-BA对离体根尖的愈伤组织诱导较为合适，0.5mg.L~(-1)NAA有利于从愈伤组织上产生体细胞胚；6-BA明显促进离体根尖直接产生类原球茎，而NAA则有阻碍作用；同时NAA的存在也使离体根尖直接成芽的时间延长。

Root border cell s, previously referred as sloughed root cap cell, is a special cell population, which separates in large number from the periphery of the root cap and accumulates in the root tip.

以四季豆为研究材料，研究了四季豆根边缘细胞数目和存活率的变化及不同浓度铝对四季豆根边缘细胞的影响。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。